1995-10-09 20:49:57 +00:00
|
|
|
\section{Built-in Module \sectcode{syslog}}
|
1997-07-17 16:34:52 +00:00
|
|
|
\label{module-syslog}
|
1995-10-09 20:49:57 +00:00
|
|
|
\bimodindex{syslog}
|
|
|
|
|
|
1998-01-13 22:41:33 +00:00
|
|
|
This module provides an interface to the \UNIX{} \code{syslog} library
|
1995-10-09 20:49:57 +00:00
|
|
|
routines. Refer to the \UNIX{} manual pages for a detailed description
|
|
|
|
|
of the \code{syslog} facility.
|
|
|
|
|
|
|
|
|
|
The module defines the following functions:
|
|
|
|
|
|
1997-11-30 05:27:26 +00:00
|
|
|
\renewcommand{\indexsubitem}{(in module syslog)}
|
|
|
|
|
|
1995-10-09 20:49:57 +00:00
|
|
|
\begin{funcdesc}{syslog}{\optional{priority\,} message}
|
|
|
|
|
Send the string \var{message} to the system logger.
|
|
|
|
|
A trailing newline is added if necessary.
|
|
|
|
|
Each message is tagged with a priority composed of a \var{facility} and
|
|
|
|
|
a \var{level}.
|
|
|
|
|
The optional \var{priority} argument, which defaults to
|
|
|
|
|
\code{(LOG_USER | LOG_INFO)}, determines the message priority.
|
|
|
|
|
\end{funcdesc}
|
|
|
|
|
|
1998-01-13 22:41:33 +00:00
|
|
|
\begin{funcdesc}{openlog}{ident\optional{, logopt\optional{, facility}}}
|
1995-10-09 20:49:57 +00:00
|
|
|
Logging options other than the defaults can be set by explicitly opening
|
|
|
|
|
the log file with \code{openlog()} prior to calling \code{syslog()}.
|
|
|
|
|
The defaults are (usually) \var{ident} = \samp{syslog}, \var{logopt} = 0,
|
|
|
|
|
\var{facility} = \code{LOG_USER}.
|
|
|
|
|
The \var{ident} argument is a string which is prepended to every message.
|
|
|
|
|
The optional \var{logopt} argument is a bit field - see below for possible
|
|
|
|
|
values to combine.
|
|
|
|
|
The optional \var{facility} argument sets the default facility for messages
|
|
|
|
|
which do not have a facility explicitly encoded.
|
|
|
|
|
\end{funcdesc}
|
|
|
|
|
|
|
|
|
|
\begin{funcdesc}{closelog}{}
|
|
|
|
|
Close the log file.
|
|
|
|
|
\end{funcdesc}
|
|
|
|
|
|
|
|
|
|
\begin{funcdesc}{setlogmask}{maskpri}
|
|
|
|
|
This function set the priority mask to \var{maskpri} and returns the
|
|
|
|
|
previous mask value.
|
|
|
|
|
Calls to \code{syslog} with a priority level not set in \var{maskpri}
|
|
|
|
|
are ignored.
|
|
|
|
|
The default is to log all priorities.
|
|
|
|
|
The function \code{LOG_MASK(\var{pri})} calculates the mask for the
|
|
|
|
|
individual priority \var{pri}.
|
|
|
|
|
The function \code{LOG_UPTO(\var{pri})} calculates the mask for all priorities
|
|
|
|
|
up to and including \var{pri}.
|
|
|
|
|
\end{funcdesc}
|
|
|
|
|
|
|
|
|
|
The module defines the following constants:
|
|
|
|
|
|
|
|
|
|
\begin{description}
|
|
|
|
|
|
|
|
|
|
\item[Priority levels (high to low):]
|
|
|
|
|
|
|
|
|
|
\code{LOG_EMERG}, \code{LOG_ALERT}, \code{LOG_CRIT}, \code{LOG_ERR},
|
|
|
|
|
\code{LOG_WARNING}, \code{LOG_NOTICE}, \code{LOG_INFO}, \code{LOG_DEBUG}.
|
|
|
|
|
|
|
|
|
|
\item[Facilities:]
|
|
|
|
|
|
|
|
|
|
\code{LOG_KERN}, \code{LOG_USER}, \code{LOG_MAIL}, \code{LOG_DAEMON},
|
|
|
|
|
\code{LOG_AUTH}, \code{LOG_LPR}, \code{LOG_NEWS}, \code{LOG_UUCP},
|
|
|
|
|
\code{LOG_CRON} and \code{LOG_LOCAL0} to \code{LOG_LOCAL7}.
|
|
|
|
|
|
|
|
|
|
\item[Log options:]
|
|
|
|
|
|
|
|
|
|
\code{LOG_PID}, \code{LOG_CONS}, \code{LOG_NDELAY}, \code{LOG_NOWAIT}
|
|
|
|
|
and \code{LOG_PERROR} if defined in \file{syslog.h}.
|
|
|
|
|
|
|
|
|
|
\end{description}
|
